Risk of using an older Firefox version on Ubuntu desktop

[papakota]

Hello!
I have Ubuntu Desktop 14.04 and I use Firefox 28 browser. I just prefer squared tabs, that's all. Hate those round ones... Though I found a mod to get that old look on a new version of Firefox, but for some strange reason they added blue font color to tabs' titles.
To keep it short...What's the risk?
So far so good... Nothing bad seems to be happening...
P.S. Should probably add that I plan to install LAMP later down the road...
SOLVED! Well, I found a Firefox native add-on to fix an issue...

 

[ultimatebob]

At some point, you're going to come across a site that's going to use a browser exploit to try to install malware on your computer.

That said, since you're using Linux, the chances of the malware actually working on your system are pretty low.

I'd try Chromium instead.

 

[anonobomber]

I'd try Chromium instead.

Chromium is going to have more roundish looking tabs than OP's going to like by default.